Both EFIS uses magnetometers to sense the earth magnetic field and indicate the magnetic heading.
The sensors have to be installed far enough from any steel parts. other builders have found three suitable places : wingtip, behind the baggage compartment and in front of the horizontal stab.
I choose the latter and fabricated a small bracket that will allow the magnetometers to be precisely aligned with the EFISes in the panel, which is not perpendicular to the main fuselage longeron.
All hardware used is aluminium.

Second time sanding and filling the forward fairing.

Under the supervision of new pet Enza, I take the canopy out of winter storage and sand the forward intersection fairing.



Then I fill all the parts that need it before next sanding session once evrything is cured.

After the work yesterday on the fuel flow transducer, there is some plumbing to do in the cabin. This is the result.

I left the cowls for the time being and decided to install the fuel flow transducer. Of the three install possibilities, I ruled out the two firewall forward as I couldn't find a correct position.
The third solution is to install the transducer in the cockpit, after the boost pump. This has its own problems as it is very cramped under the pump cover.
This website showed an elegant solution I decided to implement.
I just needed quite a lot of time to translate the pictures into an assembly I was satisfied with.
This will be the transducer's final position.



This is the transducer on its mounting bracket that will get riveted to the fuel pump support bracket.
The outlet fits just under the front cover.



Then a few tubings need to be redone. In the background is the transducer's inlet tubing, before it was running along the floor.



The filter outlet tubing needs also to be redone as it was running exactly where the transducer is now.